Blue-printing machine.



vC. E'. PEASE. BLUE PRINTING MACHINE.

APPLIUATION num un. 24, 1909.

WITNESSES C' /L/ MM Adofnzy 7H: yoRRrs PETERS to., wAsHmcroN, D. c.

UNITED STATES PATENT OFFICE.

CHARLES F. PEASE, OF CHICAGO, ILLINOIS.

BLUE-PRINTING MACHINE.

.T all whom t may concern:

Be it known that I, CHARLES F. PEASE, citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Blue-Printing Machines, of which the following is a specilication.

My. invention relates specifically to blue printing machines, and the object thereof is to provide a novel and effective apparatus with which to produce a s-eries of prints upon a continuously moving sheet of print paper, for delivery to a washing and drying machine of the latest type.

The advantages of my present invention will be apparent from the description to follow, in which reference is made to the accompanying drawing, forming a part of this specication, and in which, the ligure is a side elevation of my improved machine, partially broken away.

In accordance with my invention, I provide a machine embodying a supporting frame 1, between the uprights of which, and adjacent the lower end thereof, is supported a platform 2, upon which an electric motor 3 is mounted, having its rotating shaft provided with a pulle f t. Mounted upon the upper end of the supporting frame 1, is a supporting bracket 5, in the upper and lower portions of which are journaled horizontal rollers 6 and 7, in the same vertical plane. Also journaled horizontally within bracket 5, between said rollers 6 and 7, and in a vertical plane to one side of the vertical plane thereof, is a roller 8, provided with a worm wheel 9, engaged by a worm 10, carried by a shaft 11, journaled vertically within said bracket 5, and provided with a pulley 12 adjacent its lower end, by means of which it is rotated from the motor 3 through a belt 13, traveling over roller 14, journaled in the upper portion of the supporting frame 1. At one side thereof, the bracket 5 is provided with upper and lower horizontal projecting .arms 15 and 16 respectively, the upper arm 15 of which supports a feed table 17, and has depending hooks 18 upon which a roll 19 of blue print paper may be removably supported. The blue print paper 2O from the roll 19 is, in practice, trained over the feed table 17, over roller 8, rearwardly over a roller 21, journaled at the end of the lower bracket arm 16, and downwardly and to a suitable washing or fixing Specification of Letters Patent.

Application led April 24, 1909.

Patented Oct. 18, 1910. serial No. 491,939.

machine A, which is shown, but which forms no part of the present invention.

Supported upon the opposite side of the bracket 5, to arms 15 and 16, and adjacent the driven roller 8, are segmental brackets 22, provided with a series of upwardly curved outstanding arms, adapted to support mercury vapor light tubes 23, of well known commercial use, in a curved series concentric with the roller 8. The light tubes 23 and their frame 22 may be surrounded by a protecting shield 24.

Supported forwardly of the light tubes frame is a roller 25 which is in substantially horizontal alinement with the roller 8. This roller 25 together with said rollers 6 and 'T forms substantially a triangle. Over the roller 25 and said rollers 6 and 7 is disposed a transparent endless belt 26.

As shown in the drawing, the blue print and tracing pass about the roller 8, and the same are engaged by said endless belt 26 and firmly pressed together against said roller 8. Thus, the rotation of roller 8 causes belt or band 26 to travel about rollers 6, 7 and 25, and together with said band 26, causes a continuous feed of the blue print paper 20 to and from the light tubes 23, together with a drawing or tracing 27, to

be printed, which latter as shown, is placed upon the upper surface of the blue print paper 20, on table 17, and fed over roller 8, between the said blue print paper and the transparent belt 26, and after passage over said roller 8, is permitted to drop and be caught within a receiving basket 28, supported between the supporting frame 1, and a depending hook 29 upon the end of the lower bracket arm 16.

It is well known that in order to obtain a good blue print, that the drawings and the blue print paper must be pressed tightly together, when the same are exposed to the light. It is also known that different grades of blue print paper require different amounts of pressure. It is therefore the chief function of the transparent belt 26 to press the blue print paper and the drawings together and at the same time allowing the light to come in contact therewith. The transparent belt 26 also serves as a means for feeding the blue print paper and the drawing through the machine.

Necessary tension for the transparent band or belt 26, is maintained through the roller 25, which is supported by an arm 30,

projecting upwardly from, and pivotally mounted at its lower end upon, the supporting bracket 5, and provided with a horizontal outstanding portion 31, upon which is adjustably supported a weight 32.

From the foregoing description, it is thought that the advantages and operation of my improved blue printing machine, will be readily apparent to those skilled in the art to which my invention relates, and need not therefore, be further elaborated.

Having fully described my invention, I claim:

l. In a blue-print machine, the combination with a support, of a feeding table arranged thereon, a plurality of rollers arranged near one side of said table and forming substantially a triangle, two of said rollers being arranged in a substantially vertical plane, a driving roller arranged between said last named rollers and provided with a gearwvheel, a vertically disposed worm-gear arranged to mesh with said gear wheel, means for rotating said worm gear, a transparent endless belt trained around said iirst named plurality of rollers and in engagement with said driving roller, and

means arranged adjacent said driving roller for removably supporting tubular lights, substantially as described.

2. In a blue-print machine, a support, a plurality of rollers arranged upon said support to form substantially a triangle, a transparent endless belt arranged upon said rollers, a driving roller arranged between two of said rollers in engagement with said belt, between which and said belt, the blueprint paper and drawings pass, one of said rollers forming said triangle being arranged in a substantially horizontal plane with said driving roller and upon a swinging bracket, an adjustable 'weight carried by said bracket, a source of light, arranged upon said support adjacent said driving roller and means mounted upon said support in engagement with said driving roller for rotating said driving roller.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES F. PEASE. 

